open-nomad/drivers/java/driver_test.go
2018-11-06 12:41:39 -08:00

307 lines
7.3 KiB
Go

package java
import (
"fmt"
"io"
"io/ioutil"
"os"
"path/filepath"
"sync"
"testing"
"context"
"time"
"github.com/hashicorp/hcl2/hcl"
ctestutil "github.com/hashicorp/nomad/client/testutil"
"github.com/hashicorp/nomad/helper/testlog"
"github.com/hashicorp/nomad/helper/uuid"
"github.com/hashicorp/nomad/nomad/structs"
"github.com/hashicorp/nomad/plugins/drivers"
"github.com/hashicorp/nomad/plugins/shared"
"github.com/hashicorp/nomad/plugins/shared/hclspec"
"github.com/hashicorp/nomad/testutil"
"github.com/stretchr/testify/require"
)
func javaCompatible(t *testing.T) {
ctestutil.JavaCompatible(t)
_, _, _, err := javaVersionInfo()
if err != nil {
t.Skipf("java not found; skipping: %v", err)
}
}
func TestDriver_Fingerprint(t *testing.T) {
javaCompatible(t)
if !testutil.IsTravis() {
t.Parallel()
}
d := NewDriver(testlog.HCLogger(t))
harness := drivers.NewDriverHarness(t, d)
fpCh, err := harness.Fingerprint(context.Background())
require.NoError(t, err)
select {
case fp := <-fpCh:
require.Equal(t, drivers.HealthStateHealthy, fp.Health)
require.Equal(t, "1", fp.Attributes["driver.java"])
case <-time.After(time.Duration(testutil.TestMultiplier()*5) * time.Second):
require.Fail(t, "timeout receiving fingerprint")
}
}
func TestDriver_Jar_Start_Wait(t *testing.T) {
javaCompatible(t)
if !testutil.IsTravis() {
t.Parallel()
}
require := require.New(t)
d := NewDriver(testlog.HCLogger(t))
harness := drivers.NewDriverHarness(t, d)
task := basicTask(t, "demo-app", map[string]interface{}{
"jar_path": "demoapp.jar",
"args": []string{"1"},
"jvm_options": []string{"-Xmx64m", "-Xms32m"},
})
cleanup := harness.MkAllocDir(task, true)
defer cleanup()
copyFile("./test-resources/java/demoapp.jar", filepath.Join(task.TaskDir().Dir, "demoapp.jar"), t)
handle, _, err := harness.StartTask(task)
require.NoError(err)
ch, err := harness.WaitTask(context.Background(), handle.Config.ID)
require.NoError(err)
result := <-ch
require.Nil(result.Err)
require.Zero(result.ExitCode)
// Get the stdout of the process and assert that it's not empty
stdout, err := ioutil.ReadFile(filepath.Join(task.TaskDir().LogDir, "demo-app.stdout.0"))
require.NoError(err)
require.Contains(string(stdout), "Hello")
require.NoError(harness.DestroyTask(task.ID, true))
}
func TestDriver_Jar_Stop_Wait(t *testing.T) {
javaCompatible(t)
if !testutil.IsTravis() {
t.Parallel()
}
require := require.New(t)
d := NewDriver(testlog.HCLogger(t))
harness := drivers.NewDriverHarness(t, d)
task := basicTask(t, "demo-app", map[string]interface{}{
"jar_path": "demoapp.jar",
"args": "20",
"jvm_options": []string{"-Xmx64m", "-Xms32m"},
})
cleanup := harness.MkAllocDir(task, true)
defer cleanup()
copyFile("./test-resources/java/demoapp.jar", filepath.Join(task.TaskDir().Dir, "demoapp.jar"), t)
handle, _, err := harness.StartTask(task)
require.NoError(err)
ch, err := harness.WaitTask(context.Background(), handle.Config.ID)
require.NoError(err)
var wg sync.WaitGroup
wg.Add(1)
go func() {
defer wg.Done()
result := <-ch
require.Equal(2, result.Signal)
}()
require.NoError(harness.WaitUntilStarted(task.ID, 1*time.Second))
wg.Add(1)
go func() {
defer wg.Done()
time.Sleep(10 * time.Millisecond)
err := harness.StopTask(task.ID, 2*time.Second, "SIGINT")
require.NoError(err)
}()
waitCh := make(chan struct{})
go func() {
defer close(waitCh)
wg.Wait()
}()
select {
case <-waitCh:
status, err := harness.InspectTask(task.ID)
require.NoError(err)
require.Equal(drivers.TaskStateExited, status.State)
case <-time.After(5 * time.Second):
require.Fail("timeout waiting for task to shutdown")
}
require.NoError(harness.DestroyTask(task.ID, true))
}
func TestDriver_Class_Start_Wait(t *testing.T) {
javaCompatible(t)
if !testutil.IsTravis() {
t.Parallel()
}
require := require.New(t)
d := NewDriver(testlog.HCLogger(t))
harness := drivers.NewDriverHarness(t, d)
task := basicTask(t, "demo-app", map[string]interface{}{
"class_path": "${NOMAD_TASK_DIR}",
"class": "Hello",
"args": []string{"1"},
})
cleanup := harness.MkAllocDir(task, true)
defer cleanup()
copyFile("./test-resources/Hello.class", filepath.Join(task.TaskDir().Dir, "Hello.class"), t)
handle, _, err := harness.StartTask(task)
require.NoError(err)
ch, err := harness.WaitTask(context.Background(), handle.Config.ID)
require.NoError(err)
result := <-ch
require.Nil(result.Err)
require.Zero(result.ExitCode)
// Get the stdout of the process and assert that it's not empty
stdout, err := ioutil.ReadFile(filepath.Join(task.TaskDir().LogDir, "demo-app.stdout.0"))
require.NoError(err)
require.Contains(string(stdout), "Hello")
require.NoError(harness.DestroyTask(task.ID, true))
}
func TestJavaCmdArgs(t *testing.T) {
cases := []struct {
name string
cfg TaskConfig
expected []string
}{
{
"jar_path_full",
TaskConfig{
JvmOpts: []string{"-Xmx512m", "-Xms128m"},
JarPath: "/jar-path.jar",
Args: []string{"hello", "world"},
},
[]string{"-Xmx512m", "-Xms128m", "-jar", "/jar-path.jar", "hello", "world"},
},
{
"class_full",
TaskConfig{
JvmOpts: []string{"-Xmx512m", "-Xms128m"},
Class: "ClassName",
ClassPath: "/classpath",
Args: []string{"hello", "world"},
},
[]string{"-Xmx512m", "-Xms128m", "-cp", "/classpath", "ClassName", "hello", "world"},
},
{
"jar_path_slim",
TaskConfig{
JarPath: "/jar-path.jar",
},
[]string{"-jar", "/jar-path.jar"},
},
{
"class_slim",
TaskConfig{
Class: "ClassName",
},
[]string{"ClassName"},
},
}
for _, c := range cases {
t.Run(c.name, func(t *testing.T) {
found := javaCmdArgs(c.cfg)
require.Equal(t, c.expected, found)
})
}
}
func basicTask(t *testing.T, name string, taskConfig map[string]interface{}) *drivers.TaskConfig {
task := &drivers.TaskConfig{
ID: uuid.Generate(),
Name: name,
Resources: &drivers.Resources{
NomadResources: &structs.Resources{
MemoryMB: 128,
CPU: 100,
},
LinuxResources: &drivers.LinuxResources{
MemoryLimitBytes: 134217728,
CPUShares: 100,
},
},
}
encodeDriverHelper(t, task, taskConfig)
return task
}
func encodeDriverHelper(t *testing.T, task *drivers.TaskConfig, taskConfig map[string]interface{}) {
evalCtx := &hcl.EvalContext{
Functions: shared.GetStdlibFuncs(),
}
spec, diag := hclspec.Convert(taskConfigSpec)
require.False(t, diag.HasErrors())
taskConfigCtyVal, diag := shared.ParseHclInterface(taskConfig, spec, evalCtx)
if diag.HasErrors() {
fmt.Println("conversion error", diag.Error())
}
require.False(t, diag.HasErrors())
err := task.EncodeDriverConfig(taskConfigCtyVal)
require.Nil(t, err)
}
// copyFile moves an existing file to the destination
func copyFile(src, dst string, t *testing.T) {
in, err := os.Open(src)
if err != nil {
t.Fatalf("copying %v -> %v failed: %v", src, dst, err)
}
defer in.Close()
out, err := os.Create(dst)
if err != nil {
t.Fatalf("copying %v -> %v failed: %v", src, dst, err)
}
defer func() {
if err := out.Close(); err != nil {
t.Fatalf("copying %v -> %v failed: %v", src, dst, err)
}
}()
if _, err = io.Copy(out, in); err != nil {
t.Fatalf("copying %v -> %v failed: %v", src, dst, err)
}
if err := out.Sync(); err != nil {
t.Fatalf("copying %v -> %v failed: %v", src, dst, err)
}
}